After setting up a wildcard mapping on one of my app's custom domains (following the instructions in the docs here, the "custom domains" tab under app engine >> settings in the cloud console won't load with a message "failed to load". Looking in the Developer Tools in Chrome, under the Network tab, there is a json object describing a 500 server response with a tracking ID and a message: ""Not a valid domain name: '*.my-domain.com'" (where my-domain is my app's custom domain name). The app itself is still serving requests on that custom domain, and the wildcard setting seems to be working, but I can't access any of the custom domains settings due to this error. Has anyone encountered this situation ? Help much appreciated. Thanks
---UPDATE---
12 hours later, the problem seems to be fixed. Nothing changed by me, the custom domains tab now loads normally.